ABSHIRE HELP NEEDED

What is the origin of the name Abshire?I am pretty sure I am a descendant of Peter & Rhoda(BOND)Abshire of Franklin Co., VA through their daughter Nellie(Eleanor)who married James M. Brim...but have lost trail with their children.To tie it in does anyone know of the children of James M. Brim and Nellie?I know two were Millie Melissa BRIM and Rhoda BRIM.....All of around Franklin/Floyd Co. and around Roanoke Co., VA 1840's on....Thanks!